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Radio-Frequency Digital-to-Analog Converters

Radio-Frequency Digital-to-Analog Converters
  • Author : Morteza S Alavi,Jaimin Mehta,Robert Bogdan Staszewski
  • Publisher :Unknown
  • Release Date :2016-11-18
  • Total pages :302
  • ISBN : 9780128025031
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Summary : With the proliferation of wireless networks, there is a need for more compact, low-cost, power efficient transmitters that are capable of supporting the various communication standards, including Bluetooth, WLAN, GSM/EDGE, WCDMA and 4G of 3GPP cellular. This book describes a novel idea of RF digital-to-analog converters (RFDAC) and demonstrates how they can realize all-digital, fully-integrated RF transmitters that support all the current multi-mode and multi-band communication standards. With this book the reader will: Understand the challenges of realizing a universal CMOS RF transmitter Recognize the design issues and the advantages and disadvantages related to analog and digital transmitter architectures Master designing an RF transmitter from system level modeling techniques down to circuit designs and their related layout know-hows Grasp digital polar and I/Q calibration techniques as well as the digital predistortion approaches Learn how to generate appropriate digital I/Q baseband signals in order to apply them to the test chip and measure the RF-DAC performance. Highlights the benefits and implementation challenges of software-defined transmitters using CMOS technology Includes various types of analog and digital RF transmitter architectures for wireless applications Presents an all-digital polar RFDAC transmitter architecture and describes in detail its implementation Presents a new all-digital I/Q RFDAC transmitter architecture and its implementation Provides comprehensive design techniques from system level to circuit level Introduces several digital predistortion techniques which can be used in RF transmitters Describes the entire flow of system modeling, circuit simulation, layout techniques and the measurement process

Studies on Selected Topics in Radio Frequency Digital-to-Analog Converters

Studies on Selected Topics in Radio Frequency Digital-to-Analog Converters
  • Author : Mohammad Reza Sadeghifar
  • Publisher :Unknown
  • Release Date :2019-10-14
  • Total pages :112
  • ISBN : 9789176850305
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Summary : The network latency in fifth generation mobile technology (5G) will be around one millisecond which is much lower than in 4G technology. This significantly faster response time together with higher information capacity and ultra-reliable communication in 5G technology will pave the way for future innovations in a smart and connected society. This new 5G network should be built on a reasonable wireless infrastructure and 5G radio base-stations that can be vastly deployed. That is, while the electrical specification of a radio base-station in 5G should be met in order to have the network functioning, the size, weight and power consumption of the radio system should be optimized to be able to commercially deploy these radios in a huge network. As the number of antenna elements increases in massive multiple-input multiple-output based radios such as in 5G, designing true multi-band base-station radios, with efficient physical size, power consumption and cost in emerging cellular bands especially in mid-bands (frequencies up to 10~GHz), is becoming a challenge. This demands a hard integration of radio components; particularly the radio's digital application-specific integrated circuits (ASIC) with high-performance energy-efficient multi-band data converters. In this dissertation radio frequency digital-to-analog converter (RF DAC) and semi-digital finite-impulse response (FIR) filter digital-to-analog converter has been studied. Different techniques are used in these structures to improve the transmitter's overall performance. In the RF DAC part, a radio frequency digital-to-analog converter solution is presented, which is capable of monolithic integration into today's digital ASIC due to its digital-in-nature architecture, while fulfills the stringent requirements of cellular network radio base station linearity and bandwidth. A voltage-mode conversion method is used as output stage, and configurable mixing logic is employed in the data path to create a higher frequency lobe and utilize the output signal in the first or the second Nyquist zone and hence achieving output frequencies up to the sample rate. In the semi-digital FIR part, optimization problem formulation for semi-digital FIR digital-to-analog converter is investigated. Magnitude and energy metrics with variable coefficient precision are defined for cascaded digital Sigma-Delta modulators, semi-digital FIR filter, and Sinc roll-off frequency response of the DAC. A set of analog metrics as hardware cost is also defined to be included in semi-digital FIR DAC optimization problem formulation. It is shown that hardware cost of the semi-digital FIR DAC, can be reduced by introducing flexible coefficient precision in filter optimization while the semi-digital FIR DAC is not over-designed either. Different use cases are selected to demonstrate the optimization problem formulations. A combination of magnitude metric, energy metric, coefficient precision and analog metric are used in different use cases of the optimization problem formulation and solved to find out the optimum set of analog FIR taps. Moreover, a direct digital-to-RF converter (DRFC) is presented in this thesis where a semi-digital FIR topology utilizes voltage-mode RF DAC cells to synthesize spectrally clean signals at RF frequencies. Due to its digital-in-nature design, the DRFC benefits from technology scaling and can be monolithically integrated into advance digital VLSI systems. A fourth-order single-bit quantizer bandpass digital Sigma-Delta modulator is used preceding the DRFC, resulting in a high in-band signal-to-noise ratio (SNR). The out-of-band spectrally-shaped quantization noise is attenuated by an embedded semi-digital FIR filter. The RF output frequencies are synthesized by a configurable voltage-mode RF DAC solution with a high linearity performance. A compensation technique to cancel the code-dependent supply current variation in voltage-mode RF DAC for radio frequency direct digital frequency synthesizer is also presented in this dissertation and is studied analytically. The voltage-mode RF DAC and the compensation technique are mathematically modeled and system-level simulation is performed to support the analytical discussion.

A Poly-phased, Time-interleaved Radio Frequency Digital-to-analog Converter (Poly-TI-RF-DAC)

A Poly-phased, Time-interleaved Radio Frequency Digital-to-analog Converter (Poly-TI-RF-DAC)
  • Author : Vipul J. Patel
  • Publisher :Unknown
  • Release Date :2017
  • Total pages :89
  • ISBN : OCLC:1102319082
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Summary : With increasing data rates and new communication standards owing to substantial advancements in digitizing and signal processing capabilities over the last century, the radio spectrum is increasingly becoming a finite and expensive resource. Furthermore, radar systems and 5G communication systems have revealed the need for gigahertz-frequency signal generation with flexible frequency planning and minimal spurious emissions. Advanced digital-to-analog converters (DACs), along with associated filtering, are critical enablers of these new systems and play a key role in meeting stringent system requirements. In conventional implementations, however, high quality filters are specific to one frequency band thereby limiting their operational agility. Therefore, a DAC architecture that removes undesired image replicas, mixer sidebands, and harmonic nonlinearities is an essential component for flexible frequency synthesis as it allows for reduced filtering requirements while enabling new software-defined transmitter techniques.This dissertation aims to provide a quantitative study and analysis of a poly-phased, time-interleaved Nyquist radio frequency digital-to-analog converter (Poly-TI-RF-DAC) for use in spectrum-agile and software-defined transmitters. Beginning with the fundamental understanding of high-speed DAC capabilities and limitations, the mathematical and behavioral analyses give insight into the signal, sideband, and image replica locations of the proposed architecture. Additionally, the use of a mixing DAC as the core structure is discussed along with how nonlinearities can be canceled with the appropriate choice of frequency planning.

Interleaving Concepts for Digital-to-Analog Converters

Interleaving Concepts for Digital-to-Analog Converters
  • Author : Christian Schmidt
  • Publisher :Unknown
  • Release Date :2019-07-19
  • Total pages :245
  • ISBN : 9783658272647
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Summary : Modern complementary metal oxide semiconductor (CMOS) digital-to-analog converters (DACs) are limited in their bandwidth due to technological constraints. These limitations can be overcome by parallel DAC architectures, which are called interleaving concepts. Christian Schmidt analyzes the limitations and the potential of two innovative DAC interleaving concepts to provide the basis for a practical implementation: the analog multiplexing DAC (AMUX-DAC) and the frequency interleaving DAC (FI-DAC). He presents analytical and discrete-time models as a theoretical foundation and develops digital signal processing (DSP) algorithms to compensate the analog impairments. Further, he quantifies the impact of various limiting parameters with numerical simulations and verifies both concepts in laboratory experiments. About the Author: Christian Schmidt works at the Fraunhofer Heinrich-Hertz-Institute, Berlin, Germany, on innovative solutions for broadband signal generation in the field of optical communications. The studies for his dissertation were carried out at the Technische Universität Berlin and at the Fraunhofer Heinrich-Hertz-Institute, both Berlin, Germany.

Official Gazette of the United States Patent and Trademark Office

Official Gazette of the United States Patent and Trademark Office
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1996
  • Total pages :229
  • ISBN : PSU:000026022314
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Summary :

Advances in Analog and RF IC Design for Wireless Communication Systems

Advances in Analog and RF IC Design for Wireless Communication Systems
  • Author : Gabriele Manganaro,Domine M W Leenaerts
  • Publisher :Unknown
  • Release Date :2013-05-13
  • Total pages :320
  • ISBN : 9780123983329
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Summary : Advances in Analog and RF IC Design for Wireless Communication Systems gives technical introductions to the latest and most significant topics in the area of circuit design of analog/RF ICs for wireless communication systems, emphasizing wireless infrastructure rather than handsets. The book ranges from very high performance circuits for complex wireless infrastructure systems to selected highly integrated systems for handsets and mobile devices. Coverage includes power amplifiers, low-noise amplifiers, modulators, analog-to-digital converters (ADCs) and digital-to-analog converters (DACs), and even single-chip radios. This book offers a quick grasp of emerging research topics in RF integrated circuit design and their potential applications, with brief introductions to key topics followed by references to specialist papers for further reading. All of the chapters, compiled by editors well known in their field, have been authored by renowned experts in the subject. Each includes a complete introduction, followed by the relevant most significant and recent results on the topic at hand. This book gives researchers in industry and universities a quick grasp of the most important developments in analog and RF integrated circuit design. Emerging research topics in RF IC design and its potential application Case studies and practical implementation examples Covers fundamental building blocks of a cellular base station system and satellite infrastructure Insights from the experts on the design and the technology trade-offs, the challenges and open questions they often face References to specialist papers for further reading

Radio-Frequency Electronics

Radio-Frequency Electronics
  • Author : Jon B. Hagen
  • Publisher :Unknown
  • Release Date :1996-11-13
  • Total pages :358
  • ISBN : 0521553563
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Summary : This accessible and comprehensive book provides an introduction to the basic concepts and key circuits of radio frequency systems, covering fundamental principles which apply to all radio devices, from wireless data transceivers on semiconductor chips to high-power broadcast transmitters. Topics covered include filters, amplifiers, oscillators, modulators, low-noise amplifiers, phase-locked loops, and transformers. Applications of radio frequency systems are described in such areas as communications, radio and television broadcasting, radar, and radio astronomy. The book contains many exercises, and assumes only a knowledge of elementary electronics and circuit analysis. It will be an ideal textbook for advanced undergraduate and graduate courses in electrical engineering, as well as an invaluable reference for researchers and professional engineers in this area, or for those moving into the field of wireless communications.

MicroCMOS Design

MicroCMOS Design
  • Author : Bang-Sup Song
  • Publisher :Unknown
  • Release Date :2017-12-19
  • Total pages :434
  • ISBN : 9781439818961
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Summary : MicroCMOS Design covers key analog design methodologies with an emphasis on analog systems that can be integrated into systems-on-chip (SoCs). Starting at the transistor level, this book introduces basic concepts in the design of system-level complementary metal-oxide semiconductors (CMOS). It uses practical examples to illustrate circuit construction so that readers can develop an intuitive understanding rather than just assimilate the usual conventional analytical knowledge. As SoCs become increasingly complex, analog/radio frequency (RF) system designers have to master both system- and transistor-level design aspects. They must understand abstract concepts associated with large components, such as analog-to-digital converters (ADCs) and phase-locked loops (PLLs). To help readers along, this book discusses topics including: Amplifier basics & design Operational amplifier (Opamp) Data converter basics Nyquist-rate data converters Oversampling data converters High-resolution data converters PLL basics Frequency synthesis and clock recovery Focused more on design than analysis, this reference avoids lengthy equations and instead helps readers acquire a more hands-on mastery of the subject based on the application of core design concepts. Offering the needed perspective on the various design techniques for data converter and PLL design, coverage starts with abstract concepts—including discussion of bipolar junction transistors (BJTs) and MOS transistors—and builds up to an examination of the larger systems derived from microCMOS design.

Digital Low-level Radio Frequency Control and Microphonics Mitigation of Superconducting Cavities

Digital Low-level Radio Frequency Control and Microphonics Mitigation of Superconducting Cavities
  • Author : Nathanael Robert Usher
  • Publisher :Unknown
  • Release Date :2007
  • Total pages :144
  • ISBN : MSU:31293029562745
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Summary :

Analog Circuit Design

Analog Circuit Design
  • Author : Rudy J. van de Plassche,Johan Huijsing,Willy M.C. Sansen
  • Publisher :Unknown
  • Release Date :2013-03-09
  • Total pages :420
  • ISBN : 9781475726022
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Summary : Today digital signal processing systems use advanced CMOS technologies requiring the analog-to-digital converter to be implemented in the same (digital) technology. Such an implementation requires special circuit techniques. Furthermore the susceptibility of converters to ground bounce or digital noise is an important design criterion. In this part different converters and conversion techniques are described that are optimized for receiver applications. Part II, Sensor and Actuator Interfaces, interfaces for sensors and actuators shape the gates through which information is acquired from the real world into digital information systems, and vice versa. The interfaces should include analog signal conditioning, analog-to-digital conversion, digital bus interfaces and data-acquisition networks. To simplify the use of data-acquisition systems additional features should be incorporated, like self-test, and calibration

Energy Efficient Wireless Transmitters

Energy Efficient Wireless Transmitters
  • Author : Jason Thaine Stauth
  • Publisher :Unknown
  • Release Date :2008
  • Total pages :356
  • ISBN : UCAL:C3489776
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Summary :

Radiofrequency Radiation Levels and Population Exposure in Urban Areas of the Eastern United States

Radiofrequency Radiation Levels and Population Exposure in Urban Areas of the Eastern United States
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1978
  • Total pages :42
  • ISBN : UCR:31210012658645
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Summary :

Wideband Amplifier Design

Wideband Amplifier Design
  • Author : Allen L. Hollister
  • Publisher :Unknown
  • Release Date :2007
  • Total pages :391
  • ISBN : 9781891121517
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Summary : Allen Hollister uses easy models to develop the theory needed to understand wideband amplifier design. With this theory, he develops equations used in high frequency design, giving the reader an understanding of the process and circuit.

Microcomputer Interfacing

Microcomputer Interfacing
  • Author : G. Jack Lipovski
  • Publisher :Unknown
  • Release Date :1980
  • Total pages :426
  • ISBN : UOM:39015000450257
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Summary :

Single- and Multiple-chip Microcomputer Interfacing

Single- and Multiple-chip Microcomputer Interfacing
  • Author : G. Jack Lipovski
  • Publisher :Unknown
  • Release Date :1988
  • Total pages :478
  • ISBN : UOM:39076001337422
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Summary :

British Technology Index

British Technology Index
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :1981
  • Total pages :229
  • ISBN : UOM:39015024228697
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Summary :

CAS Cern Accelerator School Radio Frequency Engineering, Seeheim, Germany, 8-16 May 2000 Proceedings

CAS Cern Accelerator School Radio Frequency Engineering, Seeheim, Germany, 8-16 May 2000 Proceedings
  • Author : European Organization for Nuclear Research
  • Publisher :Unknown
  • Release Date :2005
  • Total pages :473
  • ISBN : UVA:X004798929
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Summary :

RF and Baseband Techniques for Software Defined Radio

RF and Baseband Techniques for Software Defined Radio
  • Author : Peter B. Kenington
  • Publisher :Unknown
  • Release Date :2005
  • Total pages :332
  • ISBN : UOM:39015062550762
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Summary : This authoritative book gives you new perspective on the RF and analog hardware and systems design aspects of software defined radio. It delves into the architecture of transmitters and receivers that make software-defined radio a reality. Covering both the practical aspects and underpinnings of these architectures, the book details all key RF and analog baseband components and sub-systems, from the converters that interface with DSPs and ASICs through to the duplexer feeding the antenna. It enables you to select the right technique for any application by providing alternatives for implementing the main system components.

Radio Frequency Photonic Devices and Systems

Radio Frequency Photonic Devices and Systems
  • Author : Andrew R. Pirich,Akis P. Goutzoulis,Paul L. Repak
  • Publisher :Unknown
  • Release Date :2000
  • Total pages :158
  • ISBN : UOM:39015050723959
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Summary :

High Speed Nyquist-rate Digital-to-analog Converter Design Techniques Based on Sampled Signal Synthesis

High Speed Nyquist-rate Digital-to-analog Converter Design Techniques Based on Sampled Signal Synthesis
  • Author : Kae-Oh Sun
  • Publisher :Unknown
  • Release Date :2006
  • Total pages :93
  • ISBN : WISC:89092594951
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Summary :

The Trade Marks Journal

The Trade Marks Journal
  • Author : Anonim
  • Publisher :Unknown
  • Release Date :2003-01-22
  • Total pages :229
  • ISBN : NYPL:33433031704541
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Summary :